Bristle head for a toothbrush



FIG. 1 is a perspective view showing the bristle head for a toothbrush of our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being a mirror image;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 shows a toothbrush comprising the bristle head of our new design on a reduced scale, with the handle of the toothbrush being shown in broken lines for illustrative purposes only and forming no part of the claimed design. 

The ornamental design for a bristle head for a toothbrush, as shown and described. 